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Mirrors > Home > MPE Home > Th. List > cldopn | Structured version Visualization version Unicode version |
Description: The complement of a closed set is open. (Contributed by NM, 5-Oct-2006.) (Revised by Stefan O'Rear, 22-Feb-2015.) |
Ref | Expression |
---|---|
iscld.1 |
Ref | Expression |
---|---|
cldopn |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | cldrcl 20830 | . 2 | |
2 | iscld.1 | . . . 4 | |
3 | 2 | iscld 20831 | . . 3 |
4 | 3 | simplbda 654 | . 2 |
5 | 1, 4 | mpancom 703 | 1 |
Colors of variables: wff setvar class |
Syntax hints: wi 4 wceq 1483 wcel 1990 cdif 3571 wss 3574 cuni 4436 cfv 5888 ctop 20698 ccld 20820 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1722 ax-4 1737 ax-5 1839 ax-6 1888 ax-7 1935 ax-8 1992 ax-9 1999 ax-10 2019 ax-11 2034 ax-12 2047 ax-13 2246 ax-ext 2602 ax-sep 4781 ax-nul 4789 ax-pow 4843 ax-pr 4906 ax-un 6949 |
This theorem depends on definitions: df-bi 197 df-or 385 df-an 386 df-3an 1039 df-tru 1486 df-ex 1705 df-nf 1710 df-sb 1881 df-eu 2474 df-mo 2475 df-clab 2609 df-cleq 2615 df-clel 2618 df-nfc 2753 df-ne 2795 df-ral 2917 df-rex 2918 df-rab 2921 df-v 3202 df-sbc 3436 df-dif 3577 df-un 3579 df-in 3581 df-ss 3588 df-nul 3916 df-if 4087 df-pw 4160 df-sn 4178 df-pr 4180 df-op 4184 df-uni 4437 df-br 4654 df-opab 4713 df-mpt 4730 df-id 5024 df-xp 5120 df-rel 5121 df-cnv 5122 df-co 5123 df-dm 5124 df-iota 5851 df-fun 5890 df-fn 5891 df-fv 5896 df-top 20699 df-cld 20823 |
This theorem is referenced by: difopn 20838 iincld 20843 uncld 20845 iuncld 20849 clsval2 20854 opncldf1 20888 opncldf3 20890 restcld 20976 lecldbas 21023 cnclima 21072 nrmsep2 21160 nrmsep 21161 regsep2 21180 cmpcld 21205 dfconn2 21222 txcld 21406 ptcld 21416 kqcldsat 21536 regr1lem 21542 filconn 21687 cldsubg 21914 limcnlp 23642 dvrec 23718 dvexp3 23741 lhop1lem 23776 abelth 24195 logdmopn 24395 lgamucov 24764 onsucconni 32436 onint1 32448 mblfinlem3 33448 mblfinlem4 33449 ismblfin 33450 dvtanlem 33459 dvasin 33496 dvacos 33497 dvreasin 33498 dvreacos 33499 fourierdlem62 40385 |
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